80_FR_61918 80 FR 61720 - Airworthiness Directives; General Electric Company Turboshaft Engines

80 FR 61720 - Airworthiness Directives; General Electric Company Turboshaft Engines

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 80, Issue 198 (October 14, 2015)

Page Range61720-61722
FR Document2015-25719

We are superseding airworthiness directives (AD) 2001-18-06 and AD 2008-22-16, for all General Electric Company (GE) CT58 turboshaft engines. AD 2001-18-06 and AD 2008-22-16 required recalculating the lives of life-limited rotating parts using a repetitive heavy-lift (RHL) multiplying factor and removal from service of parts that exceed the recalculated cyclic or hourly life limit. This new AD would consolidate AD 2001-18-06 and AD 2008-22-16, and further reduce the life capability of certain parts. This AD was prompted by recalculation of life for parts installed on engines used in Utility operations, and a reduced life for compressor spools in all operations. We are issuing this AD to prevent failure of life-limited rotating parts, uncontained part release, damage to the engine, and damage to the aircraft.

Federal Register, Volume 80 Issue 198 (Wednesday, October 14, 2015)
[Federal Register Volume 80, Number 198 (Wednesday, October 14, 2015)]
[Rules and Regulations]
[Pages 61720-61722]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2015-25719]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-0808; Directorate Identifier 2008-NE-18-AD; 
Amendment 39-18288; AD 2015-20-09]
RIN 2120-AA64


Airworthiness Directives; General Electric Company Turboshaft 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: We are superseding airworthiness directives (AD) 2001-18-06 
and AD 2008-22-16, for all General Electric Company (GE) CT58 
turboshaft engines. AD 2001-18-06 and AD 2008-22-16 required 
recalculating the lives of life-limited rotating parts using a 
repetitive heavy-lift (RHL) multiplying factor and removal from service 
of parts that exceed the recalculated cyclic or hourly life limit. This 
new AD would consolidate AD 2001-18-06 and AD 2008-22-16, and further 
reduce the life capability of certain parts. This AD was prompted by 
recalculation of life for parts installed on engines used in Utility 
operations, and a reduced life for compressor spools in all operations. 
We are issuing this AD to prevent failure of life-limited rotating 
parts, uncontained part release, damage to the engine, and damage to 
the aircraft.

DATES: This AD is effective November 18, 2015.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of November 18, 
2015.

ADDRESSES: For service information identified in this proposed AD, 
contact General Electric Company, GE Aviation, Room 285, One Neumann 
Way, Cincinnati, OH, 45215; phone: 513-552-3272; email:

[[Page 61721]]

ge.com">[email protected]ge.com. You may view this service information at 
the FAA, Engine & Propeller Directorate, 12 New England Executive Park, 
Burlington, MA. For information on the availability of this material at 
the FAA, call 781-238-7125.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2008-
0808; or in person at the Docket Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this AD, the regulatory evaluation, any comments received, and 
other information. The address for the Docket Office (phone: 800-647-
5527) is Document Management Facility, U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Christopher McGuire, Aerospace 
Engineer, Engine Certification Office, FAA, Engine & Propeller 
Directorate, 12 New England Executive Park, Burlington, MA 01803; 
phone: 781-238-7120; fax: 781-238-7199; email: [email protected].

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to supersede AD 2001-18-06, Amendment 39-12432 (66 FR 47575, 
September 13, 2001, (``AD 2001-18-06'') and AD 2008-22-16, Amendment 
39-15712 (73 FR 63629, October 27, 2008, (``AD 2008-22-16''). AD 2001-
18-06 and AD 2008-22-16 applied to certain GE CT58 turboshaft engines. 
The NPRM published in the Federal Register on May 1, 2015 (80 FR 
24852). The NPRM was prompted by GE updating the life limits of 
compressor spools. GE also updated the calculation method for the life 
consumption of compressor spools and of life-limited rotating parts 
flown in Utility operations. This update resulted in generally reduced 
lives for compressor spools and all other life-limited parts used in 
Utility operations. The NPRM proposed to consolidate AD 2001-18-06 and 
AD 2008-22-16, and further reduce the life capability of certain parts. 
We are issuing this AD to prevent failure of life-limited rotating 
parts, uncontained part release, damage to the engine, and damage to 
the aircraft.

Related Service Information Under 1 CFR Part 51

    We reviewed GE CT58 Alert Service Bulletin (ASB) No. SB 72-A0162, 
Revision 16, dated January 7, 2015. The service information describes 
procedures for calculating life limits for the affected life-limited 
rotating parts. This service information is reasonably available 
because the interested parties have access to it through their normal 
course of business or see ADDRESSES for other ways to access this 
service information.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments received on the NPRM and 
the FAA's response to each comment.

Request New Method for Determining Reduced Life Limits

    AAR Airlift Group (AAR) requested replacement of the current method 
for determining reduced life limits because current limits do not agree 
with operators field experience. AAR independent testing revealed that 
expired critical rotating parts showed no fatigue cracks.
    We disagree. FAA-approved life limits for rotating parts are 
specified to prevent fatigue crack initiation, using conservative 
analytical margins. The number of parts that AAR had inspected would 
not be sufficient to show a likelihood of part cracking consistent with 
FAA regulatory guidelines for rotating part life limits. We did not 
change this AD.

Request Reassessment of Cost Impact

    AAR disagrees that the NPRM has minimal impact on their company. 
AAR stated that their cost per flight would increase and company 
revenue would be reduced.
    We agree that this AD will impose an economic impact to operators. 
How an operator absorbs or passes on the cost is left to the operator 
to determine. We did not change this AD.

Clarification Requirements

    Since we issued the proposed AD, we discovered that ASB formatting 
discrepancies exist due to documentation changes implemented by GE. We 
changed paragraphs (e)(2), (e)(3), and (e)(4) to reflect the correct SB 
paragraph numbers.

Conclusion

    We reviewed the relevant data and determined that air safety and 
the public interest require adopting this AD as proposed.

Costs of Compliance

    We estimate that this AD will affect about 60 engines installed on 
aircraft of U.S. registry. The average pro-rated cost of the life-
limited rotating parts is $20,000. The average labor rate is $85 per 
hour. Based on these figures, we estimate the cost of this AD on U.S. 
operators to be $8,715,000.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, Section 106, describes the 
authority of the FAA Administrator. Subtitle VII, Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701, ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We have determined that this AD will not have federalism 
implications under Executive Order 13132. This AD will not have a 
substantial direct effect on the States, on the relationship between 
the national government and the States, or on the distribution of power 
and responsibilities among the various levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska to the extent 
that it justifies making a regulatory distinction, and
    (4) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator,

[[Page 61722]]

the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by:
0
a. Removing airworthiness directives (AD) 2001-18-06, Amendment 39-
12432 (66 FR 47575, September 13, 2001) (``AD 2001-18-06''); and AD 
2008-22-16, Amendment 39-15712 (73 FR 63629, October 27, 2008) (``AD 
2008-22-16''), and
0
b. Adding the following new AD:

2015-20-09 General Electric Company: Amendment 39-18288; Docket No. 
FAA-2008-0808; Directorate Identifier 2008-NE-18-AD.

(a) Effective Date

    This AD is effective November 18, 2015.

(b) Affected ADs

    This AD replaces AD 2001-18-06 and AD 2008-22-16.

(c) Applicability

    This AD applies to all General Electric Company (GE) CT58-100-2, 
CT58-110-1, CT58-110-2, CT58-140-1, and CT58-140-2 turboshaft 
engines.

(d) Unsafe Condition

    This AD was prompted by recalculation of life for parts 
installed on engines used in Utility operations, and a reduced life 
for compressor spools in all operations. We are issuing this AD to 
prevent failure of life-limited rotating parts, uncontained part 
release, damage to the engine, and damage to the aircraft.

(e) Compliance

    Do the actions required by this AD, unless already done.

(1) Calculating Cyclic Life Consumption

    Re-calculate the cycles-since-new for all compressor spools, and 
for life-limited rotating parts other than compressor spools used in 
Utility operations. Use paragraphs 3.A.(1) and 3.B.(1) in the 
Accomplishment Instructions of GE CT58 Alert Service Bulletin (ASB) 
No. SB 72-A0162, Revision 16, dated January 7, 2015, to perform the 
calculations.

(2) Removal of Compressor Spools

    After the effective date of this AD, remove compressor spools, 
part numbers (P/Ns) 5124T94G02, 6010T57G04, 6010T57G07, and 
6010T57G08 from service, before reaching the life limits specified 
in paragraph 4.A., Appendix A, in GE CT58 ASB No. SB 72-A0162, 
Revision 16, dated January 7, 2015, as re-calculated per paragraph 
(e)(1) of this AD.

(3) Removal of Rotating Parts Used in Utility Operations Other Than 
Compressor Spools

    After the effective date of this AD, remove from service any 
life-limited rotating part used in Utility operations, other than 
the compressor spools with P/Ns listed in paragraph (e)(2) of this 
AD, that exceeds its life limit as re-calculated per paragraph 
(e)(1) of this AD. Use Tables I, II, III, and IV in paragraphs 3.D. 
through 3.G. in the Accomplishment Instructions in GE CT58 ASB No. 
SB 72-A0162, Revision 16, dated January 7, 2015, and paragraph 4.D., 
Appendix A of this GE CT58 ASB, to determine when to remove these 
parts.

(4) Removal of Rotating Parts Not Used in Utility Operations Other Than 
Compressor Spools

    After the effective date of this AD, remove from service any 
life-limited rotating part not used in Utility operations, other 
than the compressor spools with P/Ns listed in paragraph (e)(2) of 
this AD, that exceeds its life limit. Use Tables I, II, III, and IV 
in paragraphs 3.D. through 3.G. in the Accomplishment Instructions 
in GE CT58 ASB No. SB 72-A0162, Revision 16, dated January 7, 2015, 
and paragraph 4.C., Appendix A of this GE CT58 ASB, to determine 
when to remove these parts.

(f) Alternative Methods of Compliance (AMOCs)

    The Manager, Engine Certification Office, FAA, may approve AMOCs 
for this AD. Use the procedures found in 14 CFR 39.19 to make your 
request. You may email your request to: [email protected].

(g) Related Information

    For more information about this AD, contact Christopher McGuire, 
Aerospace Engineer, Engine Certification Office, FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, MA 
01803; phone: 781-238-7120; fax: 781-238-7199; email: 
[email protected].

(h) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) General Electric Company (GE) CT58 Alert Service Bulletin 
No. SB 72-A0162, Revision 16, dated January 7, 2015.
    (ii) Reserved.
    (3) For GE service information identified in this AD, contact 
General Electric Company, GE Aviation, Room 285, One Neumann Way, 
Cincinnati, OH 45215; phone: 513-552-3272; email: 
ge.com">[email protected]ge.com.
    (4) You may view this service information at FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, 
MA. For information on the availability of this material at the FAA, 
call 781-238-7125.
    (5) You may view this service information at the National 
Archives and Records Administration (NARA). For information on the 
availability of this material at NARA, call 202-741-6030, or go to: 
http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Burlington, Massachusetts, on September 30, 2015.
Colleen M. D'Alessandro,
Directorate Manager, Engine & Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. 2015-25719 Filed 10-13-15; 8:45 am]
BILLING CODE 4910-13-P



                                            61720            Federal Register / Vol. 80, No. 198 / Wednesday, October 14, 2015 / Rules and Regulations

                                              (3) Will not affect intrastate aviation                effective date of this AD, or at the next engine      MA. For information on the availability of
                                            in Alaska to the extent that it justifies                shop visit, whichever occurs first:                   this material at the FAA, call 781–238–7125.
                                            making a regulatory distinction, and                        (1) Remove the O-ring seal from the fuel              (5) You may view this service information
                                              (4) Will not have a significant                        manifold fitting,                                     at the National Archives and Records
                                                                                                        (2) Remove fuel manifold flow adapter,             Administration (NARA). For information on
                                            economic impact, positive or negative,                                                                         the availability of this material at NARA, call
                                                                                                     part numbers (P/Ns) 3059754–01, 3059757–
                                            on a substantial number of small entities                01, and 3059760–01; and                               202–741–6030, or go to: http://
                                            under the criteria of the Regulatory                        (3) Install a fuel nozzle gasket and fuel          www.archives.gov/federal-register/cfr/ibr-
                                            Flexibility Act.                                         manifold flow adapter that are eligible for           locations.html.
                                            List of Subjects in 14 CFR Part 39                       installation, in accordance with paragraphs             Issued in Burlington, Massachusetts, on
                                                                                                     3.A, 3.B, and 3.C of P&WC SB No. PW100–               September 22, 2015.
                                              Air transportation, Aircraft, Aviation                 72–21861, dated November 21, 2014.
                                            safety, Incorporation by reference,                                                                            Colleen M. D’Alessandro,
                                                                                                     (f) Installation Prohibition                          Directorate Manager, Engine & Propeller
                                            Safety.
                                                                                                        After the effective date of this AD, fuel          Directorate, Aircraft Certification Service.
                                            Adoption of the Amendment                                manifold adapter, P/Ns 3059754–01,                    [FR Doc. 2015–25718 Filed 10–13–15; 8:45 am]
                                              Accordingly, under the authority                       3059757–01, and 3059760–01, and fuel                  BILLING CODE 4910–13–P
                                            delegated to me by the Administrator,                    manifold gasket, P/N 3079354–01, are not
                                                                                                     eligible for installation in any engine.
                                            the FAA amends part 39 of the Federal
                                            Aviation Regulations (14 CFR part 39) as                 (g) Definition                                        DEPARTMENT OF TRANSPORTATION
                                            follows:                                                    For the purpose of this AD, an engine shop
                                                                                                                                                           Federal Aviation Administration
                                                                                                     visit is the induction of an engine into the
                                            PART 39—AIRWORTHINESS                                    shop for maintenance involving the
                                            DIRECTIVES                                               separation of pairs of major mating engine            14 CFR Part 39
                                                                                                     flanges. The separation of engine flanges             [Docket No. FAA–2008–0808; Directorate
                                            ■ 1. The authority citation for part 39                  solely for the purpose of transportation              Identifier 2008–NE–18–AD; Amendment 39–
                                            continues to read as follows:                            without subsequent engine maintenance does            18288; AD 2015–20–09]
                                                Authority: 49 U.S.C. 106(g), 40113, 44701.           not constitute an engine shop visit.
                                                                                                                                                           RIN 2120–AA64
                                                                                                     (h) Alternative Methods of Compliance
                                            § 39.13   [Amended]                                      (AMOCs)                                               Airworthiness Directives; General
                                            ■ 2. The FAA amends § 39.13 by
                                                                                                       The Manager, Engine Certification Office,           Electric Company Turboshaft Engines
                                            removing airworthiness directive (AD)                    FAA, may approve AMOCs to this AD. Use
                                            2014–14–02], Amendment 39–17896 (79                      the procedures found in 14 CFR 39.19 to               AGENCY:  Federal Aviation
                                            FR 39958, July 11, 2014), and adding the                 make your request. You may email your                 Administration (FAA), DOT.
                                            following new AD:                                        request to: ANE-AD-AMOC@faa.gov.                      ACTION: Final rule.
                                            2015–20–03 Pratt & Whitney Canada Corp.:                 (i) Related Information
                                                Amendment 39–18281; Docket No.                                                                             SUMMARY:   We are superseding
                                                                                                        (1) For more information about this AD,            airworthiness directives (AD) 2001–18–
                                                FAA–2013–1059; Directorate Identifier
                                                                                                     contact Barbara Caufield, Aerospace                   06 and AD 2008–22–16, for all General
                                                2013–NE–36–AD.
                                                                                                     Engineer, Engine Certification Office, FAA,           Electric Company (GE) CT58 turboshaft
                                            (a) Effective Date                                       Engine & Propeller Directorate, 12 New
                                                                                                                                                           engines. AD 2001–18–06 and AD 2008–
                                              This AD is effective November 18, 2015.                England Executive Park, Burlington, MA
                                                                                                     01803; phone: 781–238–7146; fax: 781–238–             22–16 required recalculating the lives of
                                            (b) Affected ADs                                         7199; email: barbara.caufield@faa.gov.                life-limited rotating parts using a
                                              This AD replaces AD 2014–14–02,                           (2) Refer to MCAI Transport Canada AD              repetitive heavy-lift (RHL) multiplying
                                            Amendment 39–17896 (79 FR 39958, July 11,                CF–2014–41, dated November 26, 2014, for              factor and removal from service of parts
                                            2014).                                                   related information. You may examine the              that exceed the recalculated cyclic or
                                                                                                     MCAI in the AD docket on the Internet at              hourly life limit. This new AD would
                                            (c) Applicability                                        http://www.regulations.gov by searching for           consolidate AD 2001–18–06 and AD
                                               This AD applies to Pratt & Whitney Canada             and locating it in Docket No. FAA–2013–               2008–22–16, and further reduce the life
                                            Corp. (P&WC) PW120, PW121, and PW121A                    1059.
                                                                                                                                                           capability of certain parts. This AD was
                                            turboprop engines with post SB 21610                     (j) Material Incorporated by Reference                prompted by recalculation of life for
                                            configuration; PW124B, PW127, PW127E,
                                            and PW127F turboprop engines with post SB                   (1) The Director of the Federal Register           parts installed on engines used in
                                            21607 configuration; PW127E and PW127F                   approved the incorporation by reference               Utility operations, and a reduced life for
                                            turboprop engines with serial numbers (S/Ns)             (IBR) of the service information listed in this       compressor spools in all operations. We
                                            PCE–EB0366 and earlier; PW127G turboprop                 paragraph under 5 U.S.C. 552(a) and 1 CFR             are issuing this AD to prevent failure of
                                            engines with S/Ns PCE–AX0275 and earlier;                part 51.                                              life-limited rotating parts, uncontained
                                            and PW127M turboprop engines with S/Ns                      (2) You must use this service information          part release, damage to the engine, and
                                            PCE–ED0810 and earlier.                                  as applicable to do the actions required by
                                                                                                                                                           damage to the aircraft.
                                                                                                     this AD, unless the AD specifies otherwise.
                                            (d) Unsafe Condition                                        (i) Pratt & Whitney Canada Corp. Service           DATES: This AD is effective November
                                               This AD was prompted by reports of fuel               Bulletin (SB) No. PW100–72–21861, dated               18, 2015.
                                            seepage past the metal-to-metal sealing                  November 21, 2014.                                       The Director of the Federal Register
                                            surfaces of the fuel nozzle and fuel manifold               (ii) Reserved.                                     approved the incorporation by reference
                                            flow adapter. We are issuing this AD to                     (3) For Pratt & Whitney Canada Corp.               of a certain publication listed in this AD
                                            prevent in-flight fuel leakage, engine fire,             service information identified in this AD,            as of November 18, 2015.
tkelley on DSK3SPTVN1PROD with RULES




                                            damage to the engine, and damage to the                  contact Pratt & Whitney Canada Corp., 1000
                                                                                                                                                           ADDRESSES: For service information
                                            airplane.                                                Marie-Victorin Blvd., Longueuil, Quebec,
                                                                                                     Canada, J4G 1A1; phone: 800–268–8000; fax:            identified in this proposed AD, contact
                                            (e) Compliance                                           450–647–2888; Web site: www.pwc.ca.                   General Electric Company, GE Aviation,
                                               Comply with this AD within the                           (4) You may view this service information          Room 285, One Neumann Way,
                                            compliance times specified, unless already               at FAA, Engine & Propeller Directorate, 12            Cincinnati, OH, 45215; phone: 513–
                                            done. Within 1,500 flight hours after the                New England Executive Park, Burlington,               552–3272; email:


                                       VerDate Sep<11>2014    16:10 Oct 13, 2015   Jkt 238001   PO 00000   Frm 00004   Fmt 4700   Sfmt 4700   E:\FR\FM\14OCR1.SGM   14OCR1


                                                             Federal Register / Vol. 80, No. 198 / Wednesday, October 14, 2015 / Rules and Regulations                                       61721

                                            aviation.fleetsupport@ge.com. You may                    Related Service Information Under 1                   Costs of Compliance
                                            view this service information at the                     CFR Part 51                                             We estimate that this AD will affect
                                            FAA, Engine & Propeller Directorate, 12                    We reviewed GE CT58 Alert Service                   about 60 engines installed on aircraft of
                                            New England Executive Park,                              Bulletin (ASB) No. SB 72–A0162,                       U.S. registry. The average pro-rated cost
                                            Burlington, MA. For information on the                   Revision 16, dated January 7, 2015. The               of the life-limited rotating parts is
                                            availability of this material at the FAA,                service information describes                         $20,000. The average labor rate is $85
                                            call 781–238–7125.                                       procedures for calculating life limits for            per hour. Based on these figures, we
                                            Examining the AD Docket                                  the affected life-limited rotating parts.             estimate the cost of this AD on U.S.
                                                                                                     This service information is reasonably                operators to be $8,715,000.
                                              You may examine the AD docket on                       available because the interested parties
                                            the Internet at http://                                                                                        Authority for This Rulemaking
                                                                                                     have access to it through their normal
                                            www.regulations.gov by searching for                     course of business or see ADDRESSES for                  Title 49 of the United States Code
                                            and locating Docket No. FAA–2008–                        other ways to access this service                     specifies the FAA’s authority to issue
                                            0808; or in person at the Docket                         information.                                          rules on aviation safety. Subtitle I,
                                            Management Facility between 9 a.m.                                                                             Section 106, describes the authority of
                                            and 5 p.m., Monday through Friday,                       Comments                                              the FAA Administrator. Subtitle VII,
                                            except Federal holidays. The AD docket                     We gave the public the opportunity to               Aviation Programs, describes in more
                                            contains this AD, the regulatory                         participate in developing this AD. The                detail the scope of the Agency’s
                                            evaluation, any comments received, and                   following presents the comments                       authority.
                                            other information. The address for the                   received on the NPRM and the FAA’s                       We are issuing this rulemaking under
                                            Docket Office (phone: 800–647–5527) is                   response to each comment.                             the authority described in Subtitle VII,
                                            Document Management Facility, U.S.                                                                             Part A, Subpart III, Section 44701,
                                                                                                     Request New Method for Determining                    ‘‘General requirements.’’ Under that
                                            Department of Transportation, Docket
                                                                                                     Reduced Life Limits                                   section, Congress charges the FAA with
                                            Operations, M–30, West Building
                                            Ground Floor, Room W12–140, 1200                            AAR Airlift Group (AAR) requested                  promoting safe flight of civil aircraft in
                                            New Jersey Avenue SE., Washington,                       replacement of the current method for                 air commerce by prescribing regulations
                                            DC 20590.                                                determining reduced life limits because               for practices, methods, and procedures
                                                                                                     current limits do not agree with                      the Administrator finds necessary for
                                            FOR FURTHER INFORMATION CONTACT:                         operators field experience. AAR                       safety in air commerce. This regulation
                                            Christopher McGuire, Aerospace                           independent testing revealed that                     is within the scope of that authority
                                            Engineer, Engine Certification Office,                   expired critical rotating parts showed no             because it addresses an unsafe condition
                                            FAA, Engine & Propeller Directorate, 12                  fatigue cracks.                                       that is likely to exist or develop on
                                            New England Executive Park,                                 We disagree. FAA-approved life limits              products identified in this rulemaking
                                            Burlington, MA 01803; phone: 781–                        for rotating parts are specified to                   action.
                                            238–7120; fax: 781–238–7199; email:                      prevent fatigue crack initiation, using
                                            chris.mcguire@faa.gov.                                   conservative analytical margins. The                  Regulatory Findings
                                            SUPPLEMENTARY INFORMATION:                               number of parts that AAR had inspected                  We have determined that this AD will
                                                                                                     would not be sufficient to show a                     not have federalism implications under
                                            Discussion                                               likelihood of part cracking consistent                Executive Order 13132. This AD will
                                               We issued a notice of proposed                        with FAA regulatory guidelines for                    not have a substantial direct effect on
                                            rulemaking (NPRM) to amend 14 CFR                        rotating part life limits. We did not                 the States, on the relationship between
                                            part 39 to supersede AD 2001–18–06,                      change this AD.                                       the national government and the States,
                                            Amendment 39–12432 (66 FR 47575,                                                                               or on the distribution of power and
                                                                                                     Request Reassessment of Cost Impact
                                            September 13, 2001, (‘‘AD 2001–18–                                                                             responsibilities among the various
                                                                                                        AAR disagrees that the NPRM has                    levels of government.
                                            06’’) and AD 2008–22–16, Amendment
                                                                                                     minimal impact on their company. AAR                    For the reasons discussed above, I
                                            39–15712 (73 FR 63629, October 27,
                                                                                                     stated that their cost per flight would               certify that this AD:
                                            2008, (‘‘AD 2008–22–16’’). AD 2001–18–
                                                                                                     increase and company revenue would                      (1) Is not a ‘‘significant regulatory
                                            06 and AD 2008–22–16 applied to
                                                                                                     be reduced.                                           action’’ under Executive Order 12866,
                                            certain GE CT58 turboshaft engines. The                     We agree that this AD will impose an                 (2) Is not a ‘‘significant rule’’ under
                                            NPRM published in the Federal                            economic impact to operators. How an                  DOT Regulatory Policies and Procedures
                                            Register on May 1, 2015 (80 FR 24852).                   operator absorbs or passes on the cost is             (44 FR 11034, February 26, 1979),
                                            The NPRM was prompted by GE                              left to the operator to determine. We did               (3) Will not affect intrastate aviation
                                            updating the life limits of compressor                   not change this AD.                                   in Alaska to the extent that it justifies
                                            spools. GE also updated the calculation                                                                        making a regulatory distinction, and
                                            method for the life consumption of                       Clarification Requirements
                                                                                                                                                             (4) Will not have a significant
                                            compressor spools and of life-limited                       Since we issued the proposed AD, we                economic impact, positive or negative,
                                            rotating parts flown in Utility                          discovered that ASB formatting                        on a substantial number of small entities
                                            operations. This update resulted in                      discrepancies exist due to                            under the criteria of the Regulatory
                                            generally reduced lives for compressor                   documentation changes implemented by                  Flexibility Act.
                                            spools and all other life-limited parts                  GE. We changed paragraphs (e)(2),
                                            used in Utility operations. The NPRM                     (e)(3), and (e)(4) to reflect the correct SB          List of Subjects in 14 CFR Part 39
                                            proposed to consolidate AD 2001–18–06                    paragraph numbers.                                      Air transportation, Aircraft, Aviation
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                                            and AD 2008–22–16, and further reduce                                                                          safety, Incorporation by reference,
                                            the life capability of certain parts. We                 Conclusion
                                                                                                                                                           Safety.
                                            are issuing this AD to prevent failure of                  We reviewed the relevant data and
                                            life-limited rotating parts, uncontained                 determined that air safety and the                    Adoption of the Amendment
                                            part release, damage to the engine, and                  public interest require adopting this AD                Accordingly, under the authority
                                            damage to the aircraft.                                  as proposed.                                          delegated to me by the Administrator,


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                                            61722            Federal Register / Vol. 80, No. 198 / Wednesday, October 14, 2015 / Rules and Regulations

                                            the FAA amends 14 CFR part 39 as                         (3) Removal of Rotating Parts Used in Utility         202–741–6030, or go to: http://
                                            follows:                                                 Operations Other Than Compressor Spools               www.archives.gov/federal-register/cfr/ibr-
                                                                                                        After the effective date of this AD, remove        locations.html.
                                            PART 39—AIRWORTHINESS                                    from service any life-limited rotating part             Issued in Burlington, Massachusetts, on
                                            DIRECTIVES                                               used in Utility operations, other than the            September 30, 2015.
                                                                                                     compressor spools with P/Ns listed in                 Colleen M. D’Alessandro,
                                            ■ 1. The authority citation for part 39                  paragraph (e)(2) of this AD, that exceeds its
                                                                                                     life limit as re-calculated per paragraph (e)(1)      Directorate Manager, Engine & Propeller
                                            continues to read as follows:                                                                                  Directorate, Aircraft Certification Service.
                                                                                                     of this AD. Use Tables I, II, III, and IV in
                                                Authority: 49 U.S.C. 106(g), 40113, 44701.           paragraphs 3.D. through 3.G. in the                   [FR Doc. 2015–25719 Filed 10–13–15; 8:45 am]
                                                                                                     Accomplishment Instructions in GE CT58                BILLING CODE 4910–13–P
                                            § 39.13   [Amended]                                      ASB No. SB 72–A0162, Revision 16, dated
                                                                                                     January 7, 2015, and paragraph 4.D.,
                                            ■ 2. The FAA amends § 39.13 by:                          Appendix A of this GE CT58 ASB, to                    DEPARTMENT OF TRANSPORTATION
                                            ■ a. Removing airworthiness directives                   determine when to remove these parts.
                                            (AD) 2001–18–06, Amendment 39–                                                                                 Federal Aviation Administration
                                                                                                     (4) Removal of Rotating Parts Not Used in
                                            12432 (66 FR 47575, September 13,                        Utility Operations Other Than Compressor
                                            2001) (‘‘AD 2001–18–06’’); and AD                        Spools                                                14 CFR Part 39
                                            2008–22–16, Amendment 39–15712 (73
                                                                                                        After the effective date of this AD, remove        [Docket No. FAA–2015–3224; Directorate
                                            FR 63629, October 27, 2008) (‘‘AD                        from service any life-limited rotating part not       Identifier 2015–CE–026–AD; Amendment
                                            2008–22–16’’), and                                       used in Utility operations, other than the            39–18290; AD 2015–20–11]
                                            ■ b. Adding the following new AD:                        compressor spools with P/Ns listed in
                                                                                                     paragraph (e)(2) of this AD, that exceeds its         RIN 2120–AA64
                                            2015–20–09 General Electric Company:
                                                                                                     life limit. Use Tables I, II, III, and IV in
                                                Amendment 39–18288; Docket No.                                                                             Airworthiness Directives; Schempp-
                                                                                                     paragraphs 3.D. through 3.G. in the
                                                FAA–2008–0808; Directorate Identifier
                                                                                                     Accomplishment Instructions in GE CT58                Hirth Flugzeugbau GmbH Sailplanes
                                                2008–NE–18–AD.
                                                                                                     ASB No. SB 72–A0162, Revision 16, dated
                                            (a) Effective Date                                       January 7, 2015, and paragraph 4.C.,                  AGENCY:  Federal Aviation
                                                                                                     Appendix A of this GE CT58 ASB, to                    Administration (FAA), Department of
                                              This AD is effective November 18, 2015.
                                                                                                     determine when to remove these parts.                 Transportation (DOT).
                                            (b) Affected ADs                                                                                               ACTION: Final rule.
                                                                                                     (f) Alternative Methods of Compliance
                                              This AD replaces AD 2001–18–06 and AD                  (AMOCs)
                                            2008–22–16.                                                                                                    SUMMARY:   We are adopting a new
                                                                                                        The Manager, Engine Certification Office,          airworthiness directive (AD) for
                                            (c) Applicability                                        FAA, may approve AMOCs for this AD. Use
                                                                                                                                                           Schempp-Hirth Flugzeugbau GmbH
                                               This AD applies to all General Electric               the procedures found in 14 CFR 39.19 to
                                                                                                     make your request. You may email your                 Models Duo Discus and Duo Discus T
                                            Company (GE) CT58–100–2, CT58–110–1,
                                                                                                     request to: ANE-AD-AMOC@faa.gov.                      powered sailplanes. This AD results
                                            CT58–110–2, CT58–140–1, and CT58–140–2
                                            turboshaft engines.                                                                                            from mandatory continuing
                                                                                                     (g) Related Information                               airworthiness information (MCAI)
                                            (d) Unsafe Condition                                        For more information about this AD,                issued by an aviation authority of
                                               This AD was prompted by recalculation of              contact Christopher McGuire, Aerospace                another country to identify and correct
                                            life for parts installed on engines used in              Engineer, Engine Certification Office, FAA,           an unsafe condition on an aviation
                                            Utility operations, and a reduced life for               Engine & Propeller Directorate, 12 New
                                                                                                                                                           product. The MCAI describes the unsafe
                                            compressor spools in all operations. We are              England Executive Park, Burlington, MA
                                                                                                     01803; phone: 781–238–7120; fax: 781–238–             condition as excessive load on the air
                                            issuing this AD to prevent failure of life-
                                                                                                     7199; email: chris.mcguire@faa.gov.                   brake system. We are issuing this AD to
                                            limited rotating parts, uncontained part
                                            release, damage to the engine, and damage to                                                                   require actions to address the unsafe
                                                                                                     (h) Material Incorporated by Reference                condition on these products.
                                            the aircraft.
                                                                                                        (1) The Director of the Federal Register           DATES: This AD is effective November
                                            (e) Compliance                                           approved the incorporation by reference
                                                                                                                                                           18, 2015.
                                               Do the actions required by this AD, unless            (IBR) of the service information listed in this
                                                                                                     paragraph under 5 U.S.C. 552(a) and 1 CFR                The Director of the Federal Register
                                            already done.                                                                                                  approved the incorporation by reference
                                                                                                     part 51.
                                            (1) Calculating Cyclic Life Consumption                     (2) You must use this service information          of a certain publication listed in the AD
                                              Re-calculate the cycles-since-new for all              as applicable to do the actions required by           as of November 18, 2015.
                                            compressor spools, and for life-limited                  this AD, unless the AD specifies otherwise.           ADDRESSES: You may examine the AD
                                            rotating parts other than compressor spools                 (i) General Electric Company (GE) CT58             docket on the Internet at http://
                                            used in Utility operations. Use paragraphs               Alert Service Bulletin No. SB 72–A0162,
                                                                                                                                                           www.regulations.gov by searching for
                                            3.A.(1) and 3.B.(1) in the Accomplishment                Revision 16, dated January 7, 2015.
                                                                                                        (ii) Reserved.                                     and locating Docket No. FAA–2015–
                                            Instructions of GE CT58 Alert Service
                                            Bulletin (ASB) No. SB 72–A0162, Revision                    (3) For GE service information identified in       3224; or in person at Document
                                            16, dated January 7, 2015, to perform the                this AD, contact General Electric Company,            Management Facility, U.S. Department
                                            calculations.                                            GE Aviation, Room 285, One Neumann Way,               of Transportation, Docket Operations,
                                                                                                     Cincinnati, OH 45215; phone: 513–552–3272;            M–30, West Building Ground Floor,
                                            (2) Removal of Compressor Spools                         email: aviation.fleetsupport@ge.com.                  Room W12–140, 1200 New Jersey
                                              After the effective date of this AD, remove               (4) You may view this service information          Avenue SE., Washington, DC 20590.
                                            compressor spools, part numbers (P/Ns)                   at FAA, Engine & Propeller Directorate, 12               For service information identified in
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                                            5124T94G02, 6010T57G04, 6010T57G07, and                  New England Executive Park, Burlington,
                                                                                                                                                           this AD, contact Schempp-Hirth
                                            6010T57G08 from service, before reaching                 MA. For information on the availability of
                                            the life limits specified in paragraph 4.A.,             this material at the FAA, call 781–238–7125.          Flugzeugbau GmbH, Krebenstrasse 25,
                                            Appendix A, in GE CT58 ASB No. SB 72–                       (5) You may view this service information          73230 Kirchheim/Teck, Germany;
                                            A0162, Revision 16, dated January 7, 2015,               at the National Archives and Records                  telephone: +49 7021 7298–0; fax: +49
                                            as re-calculated per paragraph (e)(1) of this            Administration (NARA). For information on             7021 7298–199; email: info@schempp-
                                            AD.                                                      the availability of this material at NARA, call       hirth.com; Internet: http://


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Document Created: 2018-02-27 08:50:04
Document Modified: 2018-02-27 08:50:04
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal rule.
DatesThis AD is effective November 18, 2015.
ContactChristopher McGuire, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7120; fax: 781-238-7199; email: [email protected]
FR Citation80 FR 61720 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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